NXP UM11484 14-Cell Battery Pack Extender Owner’s Manual

: June 4, 2024
: NXP

NXP UM11484 14-Cell Battery Pack Extender Owner’s Manual

NXP provides the enclosed product(s) under the following conditions:
This reference design is intended for use of ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY. It is provided as a sample IC pre-soldered to a printed circuit board to make it easier to access inputs, outputs, and supply terminals. This reference design may be used with any development system or other source of I/O signals by simply connecting it to the host MCU or computer board via off-the-shelf cables. Final device in an application will be heavily dependent on proper printed circuit board layout and heat sinking design as well as attention to supply filtering, transient suppression, and I/O signal quality.

The goods provided may not be complete in terms of required design, marketing, and or manufacturing related protective considerations, including product safety measures typically found in the end product incorporating the goods. Due to the open construction of the product, it is the user’s responsibility to take any and all appropriate precautions with regard to electrostatic discharge. In order to minimize risks associated with the customers applications, adequate design and operating safeguards must be provided by the customer to minimize inherent or procedural hazards. For any safety concerns, contact NXP sales and technical support services. Should this reference design not meet the specifications indicated in the kit, it may be returned within 30 days from the date of delivery and will be replaced by a new kit.

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Overview of the BATT-14EXTENDER, 14-cell battery pack extender

NXP Semiconductors provides online resources for this evaluation board and its supported device(s) on http://www.nxp.com.

The information page for BATT-14EXTENDER, 14-cell battery pack extender is at http://www.nxp.com/products/:BATT-14EXTENDER. The information page provides overview information, documentation, software and tools, parametrics, ordering information and a Getting Started tab. The Getting Started tab provides quick- reference information applicable to using the BATT-14EXTENDER, 14-cell battery pack extender, including the downloadable assets referenced in this document.

CAUTION: This product has not undergone formal EMC assessment. It is the responsibility of the user to ensure that any finished assembly complies with applicable regulations on EMC interference. EMC testing, and other testing requirements for CE is the responsibility of the user.

Getting started

Kit contents

The BATT-14EXTENDER kit contents include:

BATT-14EXTENDER, 14-cell battery pack extender board
26-conductor cell terminal cable.

Figure 1 – BATT-14EXTENDER Kit components

Required equipment

To use this kit, you will need:

14-cell battery pack or a battery pack emulator, such as BATT 14CEMULATOR, BATT-14EMULATOR or BATT-14AAAPACK
External power supply 10 to 60 V – 0.5 A (optional)
Up to four BCC Evaluation boards (EVBs)

Getting to know the hardware

Board features

The BATT-14EXTENDER board allows the user to connect up to four evaluation boards to a single battery pack or battery emulator.

There are two options to supply the EVBs:

Battery or battery emulator such as BATT-14CEMULATOR, BATT-14EMULATOR or BATT-14AAAPACK
External power supply provided some additional components are added to BATT-14EXTENDER board

The following EVBs are compatible with the BATT 14EXTENDER board:

RD33771CDSTEVB
FRDM33771CSPEVB
XRD33775ADSTEVB

Board description

Connectors

The J1 connector is typically connected to a battery pack or to BATT 14CEMULATOR battery emulator. When connecting to a 14-cell battery pack, the user can use the cable provided in the kit by cutting out one of the connectors and making the appropriate connections to the battery pack.
The EVBs are connected, from J2 to J5.
The J1-J5 connectors are from Molex, series 501876. These connectors share the same pinout described in Table 1. The mate connector reference is 501646 2600 from Molex.

Table 1. J1-J5 connectors pinouts

Pin

| Connection|

Description

---|---|---
1| NTC3_GND| NTC connection (-)
2| NTC3| NTC connection (+)
3| NTC2_GND| NTC connection (-)
4| NTC2| NTC connection (+)
5| NTC1_GND| NTC connection (-)
6| NTC1| NTC connection (+)
7| NTC0_GND| NTC connection (-)
8| NTC0| NTC connection (+)
9| GND| negative battery
10| GND| negative battery
11| CT1| Battery cell1P connection
12| CT0| Battery cell1M connection
13| CT3| Battery cell3P connection
14| CT2| Battery cell2P connection
15| CT5| Battery cell5P connection
16| CT4| Battery cell4P connection
17| CT7| Battery cell7P connection
18| CT6| Battery cell6P connection
19| CT9| Battery cell9P connection
20| CT8| Battery cell8P connection
21| CT11| Battery cell11P connection
22| CT10| Battery cell10P connection
23| CT13| Battery cell13P connection
24| CT12| Battery cell12P connection
25| VBAT| positive battery
26| CT14| Battery cell14P connection

The J6 connector can be used to supply the EVBs from BATT-14EMULATOR or BATT- 14AAAPACK. The pinout of the J6 connector is described in Table 2.

Table 2. J6 connector pinouts

Pin

| Connection|

Description

---|---|---
1| VBAT| positive battery
2| VBAT| positive battery
3| CT14| Battery cell14P connection
4| CT14| Battery cell14P connection
5| CT13| Battery cell13P connection
6| CT13| Battery cell13P connection
7| CT12| Battery cell12P connection
8| CT12| Battery cell12P connection
9| CT11| Battery cell11P connection
10| CT11| Battery cell11P connection
11| CT10| Battery cell10P connection
12| CT10| Battery cell10P connection
13| CT9| Battery cell9P connection
14| CT9| Battery cell9P connection
15| CT8| Battery cell8P connection
16| CT8| Battery cell8P connection
17| CT7| Battery cell8P connection
18| CT7| Battery cell8P connection
19| CT6| Battery cell8P connection
20| CT6| Battery cell8P connection
21| CT5| Battery cell8P connection
22| CT5| Battery cell8P connection
23| CT4| Battery cell8P connection
24| CT4| Battery cell8P connection
25| CT3| Battery cell8P connection
26| CT3| Battery cell8P connection
27| CT2| Battery cell8P connection
28| CT2| Battery cell8P connection
29| CT1| Battery cell8P connection
30| CT1| Battery cell8P connection
31| NC| Not connected
32| NC| Not connected
33| CT0| Battery cell1M connection
34| GND| negative battery

Changing the board to the divider bridge option

The BATT-14EXTENDER board offers the option to use an external power supply to power-up the EVBs. In this case, the user will have to populate the divider bridge with the appropriate resistors:

R1 to R14: 1 K recommended with a (1206) footprint
R15 to R16: 0 R with a (1206) footprint

The user will also have to populate the temperature sensor footprint RT1-RT4 with a (1206) NTC. For example, NC20K00103JBA from AVX.

Use case 1

In this use case, the BATT-14EXTENDER is powered up by a BATT 14CEMULATOR. Up to four EVBs can be connected to the BATT-14EXTENDER. No additional components need to be populated. The board is delivered by default for this use case.
Product Usage

Use case 2

In this use case, the BATT-14EXTENDER is powered up by a BATT 14EMULATOR and up to four EVB can be connected to the board. BATT 14EMULATOR doesn’t have an NTC emulation. In order to allow the EVBs to have an NTC emulation, it is recommended to populate RT1-RT4 footprints with NTCs.
Product Usage

Use case 3

In this use case, the BATT-14EXTENDER is powered up by an external power supply. The positive terminal of the power supply is connected to J7 and the negative to J8. J7 and J8 are 2 mm banana plugs.

Divider bridge resistors as well as NTCs must be populated to be able to use the board with that option.
Product Usage

Schematics

The schematics of the BATT-14EXTENDER board is attached to this pdf document. To open it, please open the attachment tab on the left panel in Acrobat Reader and doubleclick on the file name.

References

The following are URLs where the user can obtain information on related NXP products and application solutions.

Table 3.

Item

| Description|

Link

---|---|---
MC33771/MC33772| Battery Cell Controllers page| http://www.nxp.com/Battery- Cell-Controllers
RD33771CDSTEVB| MC33771C Evaluation Board| https:// www.nxp.com/design /development-boards/analog-toolbox/ evaluation-board-for-mc33771c-bcc-with- isolated-daisy-chain- communication:RD33771CDSTEVB
FRDM33771CSPEVB| MC33771C Evaluation Board| https:// www.nxp.com/design /development-boards/ analog-toolbox/evaluation-board-for-mc33771c-with-spi- communication:FRDM33771CSPEVB
XRD33775ADSTEVB| MC33775A Evaluation Board| Contact your sales representative or FAE
BATT-14CEMULATOR| Battery emulator| https:// www.nxp.com/design /development-boards/analog- toolbox/14-cell-battery-pack-emulator-to-supply- mc33771c-bcc- evbs:BATT-14CEMULATOR
BATT-14EMULATOR| Battery emulator| https:// www.nxp.com/products/power- management/battery- management/14-cell-battery-pack-to-supply-mc33771- evbs :BATT-14EMULATOR
BATT-14AAAPACK| Configurable Battery Pack to supply the MC33771/MC33772 EVB’s| https:// www.nxp.com/products/power-management/battery-management/ battery-cell-controllers/configurable-battery-pack-to-supply-the-mc33771- mc33772-evbs:BATT-14AAAPACK

Legal information

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Support

Please be aware that important notices concerning this document and the product(s) described herein, have been included in section ‘Legal information’.

For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: salesaddresses@nxp.com

Date of release: 16 September 2021
Document identifier: UM11484

Documents / Resources

| NXP UM11484 14-Cell Battery Pack Extender [pdf] Owner's Manual
UM11484 14-Cell Battery Pack Extender, UM11484, 14-Cell Battery Pack Extender, Battery Pack Extender, Pack Extender, Extender
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